Just make sure to have a diverse group of exotics. I have raid gear for boots, chest, and helm. I also have exotics for chest and helm. So right now, all I need is for Xur to have gauntlets or for a set of raid gauntlets to drop. I'm pretty confident that I'll get have a good shot of hitting 30 within a week if I do hard and normal raids this week, Xur on the weekend and another shot at raids next tues/wed. All of the ass shards I find along the way will be great to max out whatever gear does come my way.